Abstract:
:The photoreceptors of the barred owl (Strix varia) consist of rods, single cones and unequal double cones present in a ratio of about 35:1:3. In the light-adapted condition the rods are of uniform diameter along their entire length and are therefore not felt to undergo photomechanical changes. The rod outer segment consists of a stack of scalloped bimembranous discs enclosed in a limiting membrane. The rod inner segment displays an ellipsoid of mitochondria, much rough endoplasmic reticulum (RER), numerous polysomes, Golgi zones and autophagic vacuoles, but no hyperboloid of glycogen. Single cones show a slightly tapered outer segment and a heterogeneous oil droplet along with an ellipsoid of mitochondria at the apex of the inner segment. Double cones consist of a larger chief member which also displays a heterogeneous oil droplet and a slightly smaller accessory member which does not. Both members of the double cone as well as the single cones show plentiful polysomes and RER as well as Golgi zones in the inner segment, but none of the cones possessed a condensed paraboloid of glycogen. The contiguous membranes of the chief and accessory cones displayed a few presumed junctional complexes. Judging by their elongated shape in the light-adapted state, cones in this species do not undergo retinomotor movements. Rods and both types of cones have both invaginated (ribbon) and superficial (conventional) synaptic sites.
journal_name
Histol Histopatholjournal_title
Histology and histopathologyauthors
Braekevelt CR,Smith SA,Smith BJsubject
Has Abstractpub_date
1996-01-01 00:00:00pages
79-88issue
1eissn
0213-3911issn
1699-5848journal_volume
11pub_type
杂志文章abstract::The rapid Golgi method, combined with current optical and electronmicroscopical techniques, was used in three central gangliogliomas and in one dysplastic gangliocytoma of the cerebellum to study the morphology of ganglionic cells. Gangliogliomas were composed of bipolar, fusiform and radiate cells with dense core and...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1990-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-18.879
更新日期:2003-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-14.805
更新日期:1999-07-01 00:00:00
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journal_title:Histology and histopathology
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abstract::The ultrastructure of pinealocytes was studied in rats with 7,12-dimethylbenz(a)anthracene-induced mammary tumors which were subjected to experimental manipulations known as enhancers of pineal actions (anosmia, underfeeding or cold exposure). In these animals we found: (I)--more nuclei with deep nuclear invaginations...
journal_title:Histology and histopathology
pub_type: 杂志文章
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更新日期:1989-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-29.1071
更新日期:2014-08-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:
更新日期:1997-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-27.1079
更新日期:2012-08-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-24.1129
更新日期:2009-09-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-11-807
更新日期:2016-12-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-18-117
更新日期:2019-10-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-26.1509
更新日期:2011-12-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
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更新日期:2000-01-01 00:00:00
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journal_title:Histology and histopathology
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更新日期:2014-02-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-16.239
更新日期:2001-01-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-18.1219
更新日期:2003-10-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-15.753
更新日期:2000-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1988-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1996-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-30.173
更新日期:2015-02-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-15.95
更新日期:2000-01-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-15.493
更新日期:2000-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-19.391
更新日期:2004-04-01 00:00:00
abstract::Recent data challenge the relevance of the RB pathway to cancer based on RB inactivation, at least in breast tumors. To obtain information on the actual role of the components of the RB pathway in tumor progression we decided to investigate whether their quantitative changes were associated with variations in the leve...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-22.769
更新日期:2007-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1995-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-25.1611
更新日期:2010-12-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-11-718
更新日期:2016-06-01 00:00:00